Zanthrine is 5 miles underground New York City. Zanthrine was made by Skin Walker and Permutation as their headquarters. It contains lots of different features and their are four ways to get there. 1. By digging. 2. Going in their manually. 3. a device that picks up sonic waves. 4. The orb of Instability. The features of the place is teleporter room, entrance, computer room, conferrence room, living quaters, and library.